It was the only page exhibiting that behavior.
Angsuman’s Authenticated WordPress Plugin
Audio Player Widget
Jetpack by WordPress.com (not activated)
WordPress Database Backup (not activated)
I reset the permalinks to the default and that appears to have fixed the problem.
Thanks so much,
No, I was hesitant in installing it. It seemed like an awful lot of stuff to unpack on my site. I was afraid it would cause trouble and require time to fix which I was not ready to do. It seems like it would be helpful.